diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2025-10-24 18:08:18 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-10-31 13:11:38 +0100 |
| commit | 60a70e61430b2d568bc5e96f629c5855ee159ace (patch) | |
| tree | 37851ee99a28edff992bccd57be9670b52727a85 /mm/truncate.c | |
| parent | ac0a11113de3f0007283d20f5a38615ea4c6e9fd (diff) | |
mm: Use folio_next_pos()
This is one instruction more efficient than open-coding folio_pos() +
folio_size(). It's the equivalent of (x + y) << z rather than
x << z + y << z.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20251024170822.1427218-11-willy@infradead.org
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'mm/truncate.c')
| -rw-r--r-- | mm/truncate.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/truncate.c b/mm/truncate.c index 91eb92a5ce4f..a3d673533e32 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -387,7 +387,7 @@ void truncate_inode_pages_range(struct address_space *mapping, same_folio = (lstart >> PAGE_SHIFT) == (lend >> PAGE_SHIFT); folio = __filemap_get_folio(mapping, lstart >> PAGE_SHIFT, FGP_LOCK, 0); if (!IS_ERR(folio)) { - same_folio = lend < folio_pos(folio) + folio_size(folio); + same_folio = lend < folio_next_pos(folio); if (!truncate_inode_partial_folio(folio, lstart, lend)) { start = folio_next_index(folio); if (same_folio) |